It has not been confirmed that Mobi will not be supported in future firmware releases. Irex said that the 1.7 update is a minor update (changing who's DRM you are supporting would be a little more than minor) and Irex hasn't said anything as to how they will support Adobe DE in the future although they have worked out some deal which hasn't been clearly articulated. That photo is from the back of someone's box that recently purchased a DR1000 but their reader still only supported Mobi DRM so its not clear that foreshadows. If anything they would probably just make it a user option as to whether they wanted to use Mobi or DE since both can't be on the device at one time.